AIR traffic controllers in France have announced three more days of strikes this month, after they caused more than 1,000 flights to be cancelled last week.
Airlines were told to halve their flight schedules on Friday due to the traffic controllers walking out across the country, disrupting hundreds of thousands of passengers.
This is because the air traffic controllers were needed to guide planes flying overhead.
Flights to Spain, Italy and other nations were among those affected, as well as direct flights in and out of France.
Three more days of strike action have now been announced by the air traffic controllers, which will affect flights again next week.
The next round of walkouts will be held on September 28, 29 and 30.
Frédéric Solano, managing director, from French aviation authority DGAC, has said discussions are ongoing as they try and avoid further disruption.
The French Syndicat National des Contrôleurs du Trafic Aérien (SNCTA) union has called the strikes due to pay and working conditions.
Ahead of last week’s strike, Ryanair called on the EU to intervene, with 80,000 of their passengers affected by the cancellations last week.
A spokesperson said: “It is inexplicable that flights which overfly France are disrupted by French ATC strikes yet domestic French flights are protected by minimum service laws.
“The European Union must step in and protect overflights so that passengers who are travelling between Spain, Italy, Ireland, Germany, etc. are not disrupted just because they fly over France while French ATC unions strike.”
EasyJet urged passengers to check the status of their flights online before travelling.
A spokesperson said: “Due to national air traffic control strike action in France affecting all French airports and airspace, airlines operating to and from French airports have been requested by the French authorities DGAC to make some cancellations.
“As a result we expect some disruption to our French flying programme as well as on routes that operate via French airspace.”
More airlines are scrapping flights this winter, with thousands of passengers to be affected.
This couple got to have a whole plane to themselves after their original flight had been cancelled.